antiproton bomb
A hypothetical weapon that would use antiprotons; primarily a science fiction or theoretical physics term.
A weapon called an antiproton bomb appeared in the science fiction novel.
反物質爆弾 is a broader term for any antimatter bomb, while 反陽子爆弾 specifically uses antiprotons.
Compound of 反陽子 (antiproton) and 爆弾 (bomb).